NDLI: Comparative CH4-sensing characteristic studies of PDMEB and PDMEB/In2O3 thin film sensors

Content Provider	IEEE Xplore Digital Library
Author	Heng-Bo Hu Guang-Zhong Xie Ping Sun Ya-Dong Jiang Hui-Ling Tai
Copyright Year	2010
Description	Author affiliation: School of Optoelectronic Information, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China (UESTC), Chengdu, Sichuan, 610054, China (Heng-Bo Hu; Guang-Zhong Xie; Ping Sun; Ya-Dong Jiang; Hui-Ling Tai)
Abstract	In this paper, the poly-2,5-dimethoxyethynylbenzene (PDMEB) and poly-2,5-dimethoxyethynylbenzene/In2O3 were in-situ synthesized as gas sensing materials. The PDMEB/In2O3 nanocomposite was accessed by two procedures both relying on Pd catalysis: (1) The reaction of ethynyltri-n-buyltin replacing Br belonged to 1,4-dibromo-2,5-dimethoxy benzene, and (2) The step-growth polymerization of PDMEB through heating up the mixer, at the same time adding appropriate In2O3 nanoparticle. The morphology of films were characterized by scanning electron microscope(SEM). Compared with the pure PDMEB, it clearly appears that In2O3 components influence the morphology of the nanocomposite film, which leads to the variation of the response-recovery behavior of sensors. The PDMEB and PDMEB/In2O3 were deposited on the surface acoustic wave devices (SAW, whose corresponding operation frequency of baseline is 433.9MHz) to fabricate gas sensors by the spin-coating method. The sensors were exposed to various concentrations of CH4 (in the range of 1%–5%) at room temperature, and the frequency shift of sensors were recorded. It was found that the PDMEB/In2O3 nanocomposite thin film sensor exhibited a better gas-sensing property than that of PDMEB thin film sensor.
Starting Page	101
Ending Page	104
File Size	380457
Page Count	4
File Format	PDF
ISBN	9781424480258
e-ISBN	9781424480265
DOI	10.1109/ICACIA.2010.5709860
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-12-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Temperature sensors PDMEB Sensitivity Surface acoustic waves PDMEB/In2O3 nanocomposite Surface morphology SAW Thin film sensors Gas detectors CH4
Content Type	Text
Resource Type	Article

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